Public Hearing: Highline Warren LLC Air Quality Permit Application

Date and Time:
Tuesday, October 18, 2022
6:00 pm


, Delaware

The DNREC Division of Air Quality will hold a public hearing (Docket #2022-P-A-0013) regarding an application by Highline Warren LLC for permits relating to a process filling line at their facility in Wilmington. Public comment period closed.

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The Department of Natural Resources and Environmental Control (DNREC), Division of Air Quality, will conduct a public hearing on Tuesday, October 18, 2022 beginning at 6:00 p.m. to consider comments from the public on the Highline Warren LLC (formerly Twinco Romax LLC) permit applications for amendments of their existing 7 DE Admin. Code 1102 Natural Minor Permits (State Permit Numbers: APC-2013/0073-O, APC-2013/0074-O, APC-2013/0075-O, APC-2013/0076-O, APC-2013/0077-O, APC-2013/0078-O, and APC-2013/0079-O). (Docket # 2022-P-A-0013.) The Applicant has applied to amend their existing permits (State Permit Numbers: APC-2013/0073-O, APC-2013/0074-O, APC-2013/0075-O, APC-2013/0076-O, APC-2013/0077-O, APC-2013/0078-O, and APC-2013/0079-O), which permit the mixing and bottling of methanol, ethanol, and propylene glycol in various combinations and concentrations with water to produce wash products and different anti-freeze products which are used for automotive, marine, recreational vehicles, and pool applications. Items to be amended include amending the existing emission levels due to an increase of the throughput of raw materials in the process and revising the formulas of some of the products. While this request increases the raw material throughput, if the permit modifications are approved permitted emissions will actually decrease due to the updated calculation methodology.

This public hearing will only cover issues related to the air permit application. It will not cover concerns related to truck traffic. For information regarding truck traffic contact Mark Luszcz, Delaware Department of Transportation by phone at (302) 760-2356 or by email at

For additional information on the above matter contact Amy Mann, Division of Air Quality 715 Grantham Lane, New Castle, DE 19720, by phone at (302) 323-4542, or by email at

Those wishing to offer verbal comments during DNREC public hearings must pre-register no later than noon of the date of the virtual hearing at or by telephone at 302-739-9295.

The Department will accept public comment through the close of business on Friday, November 4, 2022. Comments will be accepted in written form via email to, or by using the online form at, or by U.S. mail to the address below.

Docket #2022-P-A-0013

Public Hearing Officer

Lisa A. Vest
DNREC Office of the Secretary
89 Kings Highway
Dover, DE 19901


Public Hearing Transcript

DNREC Exhibits

Exhibit 1: Application Materials

Exhibit 2: Requests for a Hearing

Exhibit 3: Hearing Notification Letters

Exhibit 4: Public Notice of the Application

Exhibit 5: Public Notice of the Hearing

Exhibit 6: DNREC Presentation

Applicant Exhibits

Exhibit 1: Highline Warren Presentation

Public Comments

Anne Kiov (10/3/22)

Elaine Sodorff (10/10/22)

Tina Cole (Oct. 31, 2022)

Bill and Kathleen Hackendorn (Oct. 31, 2022)

William Lane (Nov. 2, 2022)

Applicant’s Response to Public Comments (Nov. 29, 2022)


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